From the outset of the conflict, PLA cyber-warfare efforts were disruptive activities, highly visible to allied political and military leaders. They preceded formal hostilities, which would be marked by the sinking of a Singaporean guided missile frigate in the South China Sea on 5 September. The cyber attack had a rolling start, rather than being a bolt from the blue. When the PRC did finally choose to make use of kinetic options, the cyberwar was already well underway.
For the American and Japanese leadership, in particular, there was enormous trouble in employing even rudimentary information technologies effectively during the first days of the war. Personal computers, radio networks, satellite receivers, control systems, and battlefield communication hardware failed, often making it impossible for allied commanders to share intelligence and conduct joint planning. Only a few dedicated, high-end, satellite-based communication channels were able to connect American field commanders in Japan and Hawaii with the Pentagon. But even these links were vulnerable, with the PLAAF’s antisatellite missile attacks on 6 September producing enormous damage to US telecom satellite coverage over the Pacific. Link
What do my readers think about the plausibility of such a scenario?